To prove: The identity, cosh x + cosh y = 2 cosh ( x + y 2 ) cosh ( x − y 2 ) .
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Verify the identity. cosh^2 x=(1+cosh2 x)/(2) | Numerade
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SOLVED:Use the definitions and the identity cosh^2 x-sinh^2 x=1 to find the values of the remaining five hyperbolic functions. coshx=(17)/(15), x>0
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